Lubricating system



June 24,1930. A .1. A. LUNp l 1,767,386

Filed Oct. 18, 1926 2 SheeQcs-Sheet 2 @j v 3E; a

JQ A i M1 `Ima Patented June 24, 1930 UNITED# STTS PATENT orrlee f jorrit AGUS'T LUND, or-ifiltluwIn,v ILLrNoIsnssrGNon 'ro CHALLENGE ooMrAnY;

or BATAv-A, :"tIjLi'NoIs,v A. oofrcronafrrolvor Imm-Nels LUBnICArINeisYsTEM Vppucation mea october is, 192e. Vserai No, 142327.- v

This invention relates to pump jacks and more particularly to lubricatingV systems therefor, although certain'featwures thereof may be employed with equal advantage for other purposes. Y It contemplates more especially the provision of means for automatically lubricating the coacting elements simultaneously with the movement thereof, t thereby insuring against excessive wear between the relatively movingparts. i A

One object of the present invention is to provide novel means forV insuring the lubrication at all vtimes of coacting elements simultaneously with the movement thereof.

Another object is the provision of inexpensive and improved lubricant conveying A further object is to provide lubricating instrumentalities which are inexpensive, incompleX and positive in their function.

Other objects and advantages will appear from the following description of anillustrated embodiment of the present invention.

In the drawings.:

Figure 1 is a view in elevatlonof a machine embodying features of the presentY 1nvention;

Figure 2 is a sectional View taken substantially along line II--Ilof Figure 1.

Figure 8 is a sectionalview inlelevation taken substantially along line III- IH of Figure 2;.

Figure 4 is a fragmentary ,detail view taken substantially alongv lineIV-IV of Figure 1.,

Figure 5 1s a sectional View taken' TO- guide thepump rod 115 vert1c`a1'1y, the

tially along line V`V of. Figure 2.` Figure 6' is a sectional yview taken sub- O stantiall-y al-onglineVI-VI of Figure 4,

Figure 7 isi a sectionalfrview taken substantially-along line VII-fVII of Figure-8.

Figure 8 is' a' sectional view takensubstanl Y tiially along line VIII-VIII of Figure Figure 9 is af fragmentary sectionalview taken substantially along!V line IX-IX of Figure 2. l

The lubricatiiigmeans selected for illustration-is shown in connectionV with a rpuifip A jack comprising, in this instance, a casing CTI 10 suitably formed'to carry ajlubricantthere.- in. Within the casing 10 there is'provided' a standard or web 11 formedinte'gral there-V with and'- having the upper 'surface thereof provided: with upstandingvflanges 1,2'whic`h define a drip trough 13` disposed above the surface ofl the lubricant within the casing. The standard 11 is bored to define a vertical passage 14 therethrough to receive'a pumpv rod 15 recipro'cable therein and throughan extension 16 disposed below the casifngvand formedV integral therewith. The periphery of the bore 14 isprovided with an upwardly extendin'gperipheral projection 17 so "as'to' prevent the leakage of the lubricant con# tained in the drip` trough 13* through. the pump rod bore 514e (Figure A pair of guide rods 18 and 19 aree'qually spaced from the pump rod 1 5, they beingfnred ,to the standard 1 1 within 4the trough 13` in any suitable manner, in this instan'ce,` by prei viding threaded engagement therebetween. The upper extremities of' ther rods 18 and,` 19 are maintained in spaced relation by means of a bracket 20Hsuitably bored as at 21 and 22 to.4 receive the extremitiesV of the guide .rods 18 and 19, respectively, which are held therein by the vset screwsv28 and 24 ofk standi-V ard type.- The pump rod 15 is,reciprocally guided within thejboreult of the casing. v10 by means of a guide roller 25 a well known equivalent for a cross head, and which is jou-rnalled on a horizontally disposed shaft 26 fixedv to a saddle27 having a bifurcated portion'straddling the rod 19 and detachably secured to the extremity of the pump rod 15 by threaded" engagementtherewith.

:roller 25 ,is provided with a peripheral groove 2,8't'o receive thek vertical guides 18 and`1-9 therein, it having frictional contact with one or the other of' said guides to effect'rotation of the roller 25 responsive'to rods 29. The other extremities of said rods 29 are also provided with suitable hubs 31 having projecting studs 32 associated therewith, and, in this instance, projecting through suitable apertures provided in the pair of spaced spur gears 33, thus providing` cranks. The gears are journalled on a shaft 34 centrally supported in the standard or web 11. The gears 33 are maintained in spaced relation on the shaft 34 by means of a clip 35 fixed to the standard 11 by the threaded stud 36 in a manner more fully illustrated and described in my copending application of even filing date herewith, Serial No. 142,326, and now issued in Patent No. 1,627 708. It will thus be apparent that rotation of the gears 33 will impart reciprocation to the pump rod 15 which is vertically guided by means of the roller 25 having slight frictional Contact with the guide rods 18 and 19.

Rotation is imparted to the gears 33 by means of a drive shaft 37 connected exteriorly of the casing 10 to any suitable source .of power.. The shaft 37 is enclosed in a shaft housing 38 formed integral with the casing 10 on one side thereof, the shaft being journalledl in suitable bearings 39 and 40 of standard construction, positioned in suitable bearing raceways 41 and 42 provided in the shaft housing 38 and the standard 11, respectively. The portion of the shaft 37 which is within the casing 10 is provided with a pair of pinions 43-43 spaced thereon to mesh with the spur gears 33-33 hereinabove described. The casing 10 is provided with a suitable threaded aperture 44 coaxial with the shaft 37 to receive a detachable plug 45 to permit the pinions 43-43 to be readily removed therefrom. The extremity of the shaft 37 projecting exteriorly of the shaft housing 38 is, in this instance, provided with suitable hubs 46 and 47 to receive the vanes of a windmill wind wheel constituting the source of power yin the present embodiment.

The fact that vthe coacting movable elements are subjected to comparatively high speeds and stress reactions makes it imperative or at least highly desirable that lubricating means be provided for decreasing the friction and wear between the coacting parts to a minimum. Numerous types of forced lubrication systems have heretofore been proposed, but have not proven entirely satisfactory due to theircomplex construction and their unnecessary consumption of power. IThe means employed, in this instance, are

designed to overcome the difhculties hereto-A fore experienced, and comprises, in this instance, means to elevate the lubricant along theguide rods 18 and 19 to maintain the lubricant film on the shaft 26, upon which the grooved guide wheel 25 is mounted. Thel elevating means in this instance comprises an oil clipper device 48 which envelops the guide rod 19 and is loosely secured at one extremity thereof to the saddle 27 which imparts reciprocation thereto. The spiral oil conveyor 48 surrounds one or both of the rods 18 and/or 19 and has lost motion connection with the saddle 27 (see Fig. 1). In the present embodiment this oil dipper mechanism 48 consists of a wire loosely coiled about one of the vertical guide rods 19. The upper end of the wire passes loosely through a part of the saddle 27 and has a turned out end 48 and a kink 48". The stroke of the conveyor 48 is never as great as the stroke of the power rod so that when the stroke of the latter is changed, the extent of movement of the dipper is unaltered. The clipper 48 enters the drip trough 13 containing lubricant, and on the up stroke carries with it the lubricant between the convolutions of the spring. This wiping action tends to cover the rod 19 with a film of lubricant adapted to eventually find its way to the peripheral groove 28 of the roller 25 which contacts therewith. The roller 25 is provided in this instance with a plural'ity of radial grooves 49 which effect communication between the peripheral groove 28 of the roller and the axis thereof, whereby the lubricant is transferred or conveyed to the surface of the shaft 26 upon which the roller 25 is ournalled. As stated above, the trough 13 is disposed above the level of the lubricant so that the former must be supplied with `the lubricant from the casing 10. The means for accomplishing this end, in this instance, consists of an inwardly extending corrugated member 50 (Figures 2 and 5) secured to one of the gears 33 as by fasteners 51, near the periphery thereof, so as to dip in the lubricant contained in the chamber with the rotation thereof to periodically transfer or splash lubricant from the casing 10 to the drip trough 13, thereby maintaining a supply of lubricant therein.

To effectively` lubricate the shaft bearings 39 and 40 the lubricant is caused to travel along the shaft 37 as will subsequently appear. To accomplish this end in the present embodiment, an additional drip trough 52 is provided asv an extension of the trough 13 to convey the overflow lubricant from the trough 13 to a position abovethe shaft 37. The trough 52 as will appear from the showing, is somewhat shallower and disposed'below the upper surface of the flanges 12 defining the trough 13 so that the overflow therefrom will be directed to the trough 52 which has a discharge orifice 53 immediately above the shaft 37. -Disposedbelow the discharge orifice 53 of the trough 52 is a defiector 54 `(Figures 3 and 8) comprising an annular flange which is slottedas at 55 to define an inclined surface 56 to deiiect the lubricant dripping thereon, axially of the shaft 37. The lubricant is conveyed along 'the shaft by novel conveying means comrising in this instance a helical s ring 57 l D7 1 7 D, havin@ the convoiutions thereof embracing the shaft and disposed between the bearingV 4l and the deflecting means 55. The spring 57 is preferably held stationary with respect to the shaft 37 in any appropriate manner so that the lubricant deflected thereto will be conveyed between the convolutions of the spring 57 defining a helical path which causes axial conveyance of the lubricant responsive to the rotation of the shaft 37 to properly lubricate the coacting elements disposed in the path thereof. It is obvious that similar means may be provided on the shaft 37 between the pinions 43 to effect the proper distribution of lubricant to the bearing 40. It is to be noted that apertures 58 may be provided in the trough 13 to lubricate the bearing Ll0 and other coacting parts in the vicinity thereof. It is to be noted that the shaft housing 38 is provided with La runway 59 inclined downwardly toward the casing 10 to effect the return of the lubricant conveyed along the shaft 37, which drops downwardly at the terminal lend of the shaft housing so that the lubricant may be repeatedly used.

I am aware that many changes may be made, and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted hereon, otherwise than necessitated by the prior art.

I claim as my invention:

l. The combination with a casing having a lubricant therein, of a trough disposed in said casing above said lubricant, means in said casing fo;` periodically transferring lubricant from said casing to said trough, a rod fixed on said trough, means for elevating lubricant along said rod, said elevating means comprising a reciprocable member coacting with said rod, and a conveyor fixed to the member and enveloping said rod.

2. The combination with a casing having a lubricant therein, of a trough disposed in said casing above said lubricant, means in said casing for periodically transferring lubricant from said casing to said trough, a rod fixed on said trough, means for elevating lubricant along said rod, said elevating means comprising a reciprocable member coacting with saidrod, a conveyor fixed to the member and enveloping said rod, and a guide wheel rotatable on said rod responsive to the reciprocation of said reciprocable member. Y

3. The combination with a casing having a lubricant therein, of a trough disposed in said casing above said lubricant, means in said casing for periodically transferring lubricant from said casing to said trough, a rod fixed on said trough, means for elevatf ing lubricant along said rod, said elevating Vmeans disposed beneath said trough, said conveying means `comprising a driving shaft, a helical stationary member enveloping said shaft, and means on said shaft for K deflecting the drip from said trough to said conveyor, said defiecting means comprising a shoulder having irregular 'means on the surface thereof.

5. The combination with lubricant drip supply means, of a rotatable shaft disposed below said means, means on said shaft for defiecting dripping lubricant axially of said shaft, and means for carrying said deflected lubricant along the surface of said shaft,

said deflecting means including an annularV shoulder, having grooves therein to define an inclined defiectng surface. 6. In combination, a container havin lubricant therein, a plurality of fixed upright lrods associated with said container, a movable member, a lubricant conveyor loosely disposed about one of said rods and having one of its ends resiliently attached to said movable member, a reciprocating rod secured to said member, and means for reciprocating said rod for actuating said conveyor into and out of said container for eledvating lubricant along one of said fixed ro s.

7. In combination, a container having lubricant therein, a trough disposed in said container above said lubricant, rotatable means for transferring lubricant from said container into said trough, a plurality of fixed rods in said trough, a reciprocal rod having a lateral extending member disposed adjacent one of said fixed rods, a lubricant conveyor loosely disposedv about said lastmentioned fixed rod and having its upper end resiliently attached to said member, and means for reciprocating said conveyor into and out of said trough for elevating lubricant along one of said fixed rods.

In testimony whereof I have hereunto subscribedmy name.

JOHN AUGUST LUND..V 

